<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrap">
            <div class="button">{{ this.currentCity }}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div
            class="button-wrap"
            v-for="item in hotCities"
            :key="item.id"
            @click="handleClickName(item.name)"
          >
            <div class="button">{{ item.name }}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{ key }}</div>
        <div
          class="item-list border-topbottom"
          v-for="city in item"
          :key="city.id"
          @click="handleClickName(city.name)"
        >
          <div class="item">{{ city.name }}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from "better-scroll";
import { mapState, mapMutations } from "vuex";
export default {
  name: "CityList",
  props: {
    cities: Object,
    hotCities: Array,
    letter: String,
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.wrapper, {
      click: true,
    });
  },
  methods: {
    handleClickName(city) {
      this.changeCity(city);
      this.$router.push("/");
    },
    ...mapMutations(["changeCity"]),
  },
  watch: {
    letter() {
      if (this.letter) {
        const element = this.$refs[this.letter][0];
        this.scroll.scrollToElement(element);
      }
    },
  },
  computed: {
    ...mapState({
      currentCity: "city",
    }),
  },
};
</script>

<style lang="scss" scoped>
@import "~styles/minin";
.list {
  overflow: hidden;
  position: absolute;
  top: 1.68rem;
  left: 0;
  right: 0;
  bottom: 0;
}
.border-topbottom::before {
  border-color: #ccc;
}
.border-topbottom::after {
  border-color: #ccc;
}
.title {
  line-height: 0.54rem;
  background: #eee;
  text-indent: 0.2rem;
  @include sc(0.26rem, #666);
}
.button-list {
  padding: 0.1rem 0.6rem 0.1rem 0.1rem;
  overflow: hidden;
  .button-wrap {
    float: left;
    width: 33.33%;
    .button {
      margin: 0.1rem;
      padding: 0.1rem 0;
      text-align: center;
      border: 0.02rem solid #ccc;
      border-radius: 0.06rem;
    }
  }
}
.item-list {
  line-height: 0.6rem;
  color: #666;
  padding-left: 0.2rem;
}
</style>>